A systematic analysis and evaluation of slagging problems occurred on boilers in Yunfu Power Plant

Guangdong Province

has been carried out. Based on the principle of emphatically solving the slagging problems and simultaneously taking account of stabilizing combustion

an optimal retrofitting scheme is suggested

including the blunt body of burners to be set upright

the middle-and lower-level secondary air to be concentratically configured

the burning cavity with blunt body to be used for the lower-level primary air

as well as making the left and right side of pulverized coal and air mixture flow to be rich and lean respectively etc.

It is expected that the desired results of retrofitting can be achieved.’